Untitled

#include <iostream>
using namespace std;
int main()
{
	int a, b;
	int i = 0;
	cin >> a >> b;
	if (a % 2 == 0)
	{
		for (i = a; i <= b; i += 2)
		{
			cout << i << " ";
		}
	}
	else
	{
		for (i = a+1; i <= b; i += 2)
		{
			cout << i << " ";
		}
	}
}